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SYSTEM CERTIFICATION
Roof Type
Module Type
System Level Fire Rating
Rail Direction
Module Orientation
Steep Slope - roof pitches ≥ 2 in/ft
Steep Slope - roof pitches ≥ 2 in/ft
Type 1, 2, 3 with metal frame, 10 with
Type 1, 2, 3 with metal frame, 10 with
metal frame, 19, 22, 25, 29, & 30
metal frame, 19, 22, 25, 29, & 30
Class A
Class A
Parallel OR Perpendicular to Ridge
Parallel OR Perpendicular to Ridge Landscape OR Portrait
Landscape OR Portrait
Low Slope - roof pitches < 2in/ft
Low Slope - roof pitches < 2in/ft
Type 1, 2, 29, & 30
Type 1, 2, 29, & 30
Tested Module
UL2703 Certification Load Ratings
Tested Loads
Tested Module Area
SunPower SPR-A440 -COM
SunPower SPR-A440 -COM
Down: 50 psf, Up: 50 psf , Slope: 15 psf
Down: 50 psf, Up: 50 psf , Slope: 15 psf
Down: 75 psf, Up: 75 psf , Slope: 23 psf
Down: 75 psf, Up: 75 psf , Slope: 23 psf
21.86 sq ft
21.86 sq ft
Jinko JKM-xxxM 72HL4-V
Jinko JKM-xxxM 72HL4-V
Down: 39.47 psf, Up: 22.28 psf, Slope: 8 psf
Down: 39.47 psf, Up: 22.28 psf, Slope: 8 psf
Down: 59.20 psf, Up: 33.42 psf, Slope: 12 psf
Down: 59.20 psf, Up: 33.42 psf, Slope: 12 psf
27.76 sq ft
27.76 sq ft
The NXT UMOUNT system has been certified and listed to the UL 2703 standard (Rack Mounting Systems and Clamping Devices for Flat-Plate Photovoltaic Modules
and Panels). This standard included electrical grounding, electrical bonding, mechanical load and fire resistance testing.
SYSTEM LEVEL FIRE CLASSIFICATION
The system fire class rating requires installation in the manner specified in the NXT UMOUNT Installation Guide. NXT UMOUNT has been classified to the system level
fire portion of UL 2703. NXT UMOUNT has achieved system level performance for steep sloped roofs and low sloped roofs. System level fire performance is inherent
in the NXT UMOUNT design, and no additional mitigation measures are required. See table below for definition of steep sloped and low sloped roofs. The system is to
be mounted over fire resistant roof covering rated for the application. There is no required minimum or maximum height limitation above the roof deck to maintain
the system fire rating for NXT UMOUNT. Approved Module Types & System Level Fire Ratings are listed below:
MECHANICAL LOAD TEST MODULES
The modules selected for UL 2703 mechanical load testing were selected to represent the broadest range possible for modules on the market. The tests performed
covers module frame thicknesses greater than or equal to 1.0 mm, single and double wall frame profiles (some complex frame profiles could require further analysis to
determine applicability), and clear and dark anodized aluminum frames. PV modules may have a reduced load rating, independent of the NXT UMOUNT rating. Please
consult the PV module manufacturer's installation guide for more information.
UL2703 CERTIFICATION MARKING:
Unirac NXT UMOUNT is listed to UL 2703. Certification marking is embossed on
all Combo Clamps as shown. Labels with additional certification information
are provided with clamps and must be applied to the NXT UMOUNT Rail at the
edge of the array.
Note: This racking system may be used to ground and/or mount a PV module
complying with UL1703/UL61730 only when the specific module has been
evaluated for grounding and/or mounting in compliance with the included
instructions.
APPENDIX A
